Nervous system

Nervous system: set of nerves,
ganglions and nervous centers that receive sensory signal. Commands
and coordinates vital functions.Brachial plexus: network of nerves of the arm.Intercostal nerve: cord conducting nerve impulses between the
ribs.Radial nerve: cord conducting nerve impulses in the area of the
radius.Median nerve: main cord conducting nerve impulses in the upper
limb.Ulnar nerve: cord conducting nerve impulses in the area of the
elbow.Lumbar plexus: network of nerves of the lower back.Sciatic nerve: cord conducting nerve impulses in the area of
the thigh and lower leg.Common peroneal nerve: cord conducting nerve impulses along the
inside of the lower leg.Superficial peroneal nerve: cord conducting nerve impulses of
the muscles and skin of the leg.Digital nerve: cord conducting nerve impulses of the fingers.Sacral plexus: network of nerves of the sacrum.Spinal cord: substance belonging to the nervous system, found
in the holes of the vertebrae.Cerebellum: nervous centre situated under the brain.Cerebrum: seat of the mental capacities.

Photo :

EN : Human
skin

FR : Peau
humaine

ES : Piel
humana

Humain skin is the largest organ of the
integumentary system made up of multiple layers of epithelial tissues
that guard underlying muscles and organs. As the interface with the surroundings,
skin plays the most important role in protecting.